Energy Systems (ATP/PC, lactic acid and aerobic)

Question 1

Def: ATP/PC

Answer 1

The ATP/PC system is an anaerobic energy system. In other words, oxygen is not needed to synthesize ATP in the muscles.

• short burst of energy

Question 2

Source of fuel: ATP/PC

Answer 2

Creatine phosphate

Question 3

Efficiency: ATP/PC

Answer 3

Very fast but limited source of fuel

The PC runs out quickly resulting in this system no longer being available until it has begun to recover

Question 4

Recovery: ATP/PC

Answer 4

Recovers as the creatine in the cell connect to the free phosphate again.

PC is restored in 30 secs - 2mins

Question 5

Efficiency: ATP/PC

Answer 5

ATP/PC system does not last very long due to the limited source of fuel and fast ATP production

• will deplete its fuel in 8-12 seconds (depending on intensity)

Question 6

Fatigue: ATP/PC

Answer 6

Depletion of PC and ATP (when there is no more fuel)

Question 7

Byproducts: ATP/PC

Answer 7

Heat

As a result breaking phosphate groups off PC and ATP

Question 8

Activities: ATP/PC

Answer 8

100m sprint, shot put, high jump

Question 9

Intensity: ATP/PC

Answer 9

High intensity, 85% MHR

Question 10

Energy Systems: TIFFBRAE

Answer 10

Time
Intensity
Fuel
Fatigue
Byproducts
Recovery
Activities
Efficiency

Question 11

Def: Lactic Acid

Answer 11

The lactic acid system is anaerobic in nature. The lactic acid system is the dominant system in sports.

Question 12

Intensity: Lactic Acid

Answer 12

High intensity.

If the intensity is submaximal (just under absolute max) then the system lasts considerably longer

Question 13

Source of fuel: Lactic Acid

Answer 13

Glycogen (carbohydrates)

Question 14

Efficiency: Lactic Acid

Answer 14

Provides ATP quickly

Question 15

Time: Lactic Acid

Answer 15

30 secs - 3mins

Depends on the intensity

Question 16

Fatigue: Lactic Acid

Answer 16

build-up of lactic in the blood

Question 17

Byproducts: Lactic Acid

Answer 17

Lactic acid

The burning sensation in the muscle, shortness of breath and fatigue are all symptoms of lactic acid build-up thus impacts the athlete’s ability to perform

Question 18

Recovery: Lactic Acid

Answer 18

20 mins to 2 hours

Question 19

Activites: Lactic Acid

Answer 19

200m or 400m run, 50-100m swim are highly reliant on the lactic acid system

Question 20

Def: Aerobic system

Answer 20

Requires the presence of oxygen to ensure muscle contractions can continue. Oxygen is able to fill the muscle cells, reducing the accumulation of lactic acid in the muscles

the predominant system used during endurance events

Question 21

Source of fuel: Aerobic system

Answer 21

carbohydrates, fat, and protein

Question 22

Efficiency: Aerobic system

Answer 22

Very efficient in producing ATP

Question 23

Time: Aerobic system

Answer 23

The aerobic system can produce ATP continuously for well over an hour or for as long as sources of fuel are avalible

Question 24

Fatigue: Aerobic system

Answer 24

Fatigue occurs because of a lack of fuel this is called ‘hitting the wall’

Question 25

Byproducts: Aerobic system

Answer 25

carbon dioxide and water

Question 26

Recovery: Aerobic system

Answer 26

Depends on the duration of its use.

Question 27

Intensity: Aerobic system

Answer 27

Varies

lasts more than 3mins

Question 28

Activities: Aerobic system

Answer 28

Most team sports; netball, soccer etc and 1500m swimming, marathon running, cycling, triathlons, iron man